1 files changed, 64 insertions, 0 deletions
diff --git a/intern/cycles/kernel/osl/shaders/node_light_path.osl b/intern/cycles/kernel/osl/shaders/node_light_path.osl
new file mode 100644
index 00000000000..ba268db288c
--- /dev/null
+++ b/intern/cycles/kernel/osl/shaders/node_light_path.osl
@@ -0,0 +1,64 @@
+/*
+ * Copyright 2011-2013 Blender Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "stdcycles.h"
+
+shader node_light_path(output float IsCameraRay = 0.0,
+                       output float IsShadowRay = 0.0,
+                       output float IsDiffuseRay = 0.0,
+                       output float IsGlossyRay = 0.0,
+                       output float IsSingularRay = 0.0,
+                       output float IsReflectionRay = 0.0,
+                       output float IsTransmissionRay = 0.0,
+                       output float IsVolumeScatterRay = 0.0,
+                       output float RayLength = 0.0,
+                       output float RayDepth = 0.0,
+                       output float DiffuseDepth = 0.0,
+                       output float GlossyDepth = 0.0,
+                       output float TransparentDepth = 0.0,
+                       output float TransmissionDepth = 0.0)
+{
+  IsCameraRay = raytype("camera");
+  IsShadowRay = raytype("shadow");
+  IsDiffuseRay = raytype("diffuse");
+  IsGlossyRay = raytype("glossy");
+  IsSingularRay = raytype("singular");
+  IsReflectionRay = raytype("reflection");
+  IsTransmissionRay = raytype("refraction");
+  IsVolumeScatterRay = raytype("volume_scatter");
+
+  getattribute("path:ray_length", RayLength);
+
+  int ray_depth = 0;
+  getattribute("path:ray_depth", ray_depth);
+  RayDepth = (float)ray_depth;
+
+  int diffuse_depth = 0;
+  getattribute("path:diffuse_depth", diffuse_depth);
+  DiffuseDepth = (float)diffuse_depth;
+
+  int glossy_depth = 0;
+  getattribute("path:glossy_depth", glossy_depth);
+  GlossyDepth = (float)glossy_depth;
+
+  int transparent_depth = 0;
+  getattribute("path:transparent_depth", transparent_depth);
+  TransparentDepth = (float)transparent_depth;
+
+  int transmission_depth = 0;
+  getattribute("path:transmission_depth", transmission_depth);
+  TransmissionDepth = (float)transmission_depth;
+}